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Hydraulic clamping device Ratio-Clamp®

Hydraulic clamping device Ratio-Clamp®

Hänchen's Ratio-Clamp® offers safety while saving energy costs. Thanks to its sophisticated functional principle, the clamping device features some fundamental advantages when compared with other locking systems:

- clamps all round rods
- immediate fixation of the rod
- direction-independent load-bearing
- clamps without energy supply
- safe even in extreme conditions such as heat or cold
- special solution: up to 2.000 kN for rod Ø of up to 300 mm

Functional principle of the clamping device of a gantry milling machine

Ratio-Clamp® rod locks works mechanically by using frictional contact: The power is directed through springs to a clamping sleeve which holds the rod radially using friction. The load capacity of the fixation is not influenced by the direction. The hydraulic releasing pressure moves the locking piston against the spring power to unlock the clamp - the rod can be moved in both directions. When the hydraulic pressure drops, the power stored in the springs is released, and the rod is locked.

Product video

Competence in key technologies is the basis for reliable, durable high-quality hydraulic products and solutions. Since 1952, Hänchen has designed and produced more than 250,000 hydraulic cylinders, and provided customers all over the world with catalogue products and custom-made designs. On this basis, we offer small batches and unique single pieces for a wide range of applications - without the prototype risk.

The company from Ostfildern stands for extensive expert knowledge in the field of drive solutions. With more than 200 highly qualified employees, Hänchen is constantly developing, testing and manufacturing innovative solutions - in their own research and production departments in Germany.

These solutions include the patented clamping device Ratio-Clamp®, the drive system Ratio-Drive®, the use of special materials such as H-CFRP, and individual machine elements.